When the principal suddenly recited the Ksitigarbha Sutra in ancient Chinese at the opening ceremony of the third year of high school, Chen Zhao found that the entire school had been dragged into the junction of yin and yang. Here, school rules are a book of life and death, homework books can eat people, and test scores are directly exchanged for longevity. Chen Zhao, who carries the fragments of the "Book of Lu Ban" handed down from his ancestors, forms an alliance with Zhong Xiaokui, a talented girl who carries a Nuo noodle and can use mathematical formulas to exorcise demons, to fight against the terrifying rules of combining China and the West - the imperial examination earthbound spirits require perfect answers, while the Western devils use school rules to harvest souls.
As the truth about the female ghost of the Republic of China in the old teaching building surfaced, they discovered that the school itself was a huge altar, nourishing the millennium of resentment in the imperial examination with the fear of the students. In the end, Chen Zhao burned "Lu Ban Shu" and restarted reality, but made all the survivors forget this experience - until the reflection of the Nuo noodle pattern quietly appeared on their electronic devices...
